Question

Rajesh and prabhu went to a bookshop. Rajesh purchased 5 pens, 3 notebooks and 9 pencils and used up all her money. Prabhu purchased 6 pens, 6 notebooks and 18 pencils and paid 50% more than what rajesh paid. What % of the rajesh money was spent on pens?

Answer 1

Answer:

50% of Rajesh's money was spent on pens.

Step-by-step explanation:

Let the cost of 5 pens 3 notebooks and 9 pencils is X

Then the cost of 10 pens, 6 notebooks and 18 pencils will be 2X

But Prabhu purchased 5 pens, 6 notebooks and 18 pencils for

X + 50X/100 = 3X/2

Therefore cost of 5 pens = 2X - 3X/2 = X/2

Now X/2 is half of X

i.e. Rajesh spent 50% of his money on pens.

Hope this helps.

Answer 2

Answer:-

62.5% of money.

Step-by-step explanation:

In this question,

We have been given that

Rajesh purchased 5 pens, 3 notebooks and 9 pencils and used all his money

While Prabhu purchased 6 pens 6 notebooks and 18 pencils and paid 50% more than rajesh paid.

Let the cost of 5 pens 3 notebooks and 9 pencils is X

Then the cost of 10 pens, 6 notebooks and 18 pencils will be 2X

But Prabhu purchased 6 pens, 6 notebooks and 18 pencils for

$X\ +\ \frac{50X}{100}\ =\ \frac{3X}{2}$

Therefore cost of 4 pens 0 notebooks and 0 pencils =  $2X\ -\ \frac{3X}{2}\ =\ \frac{X}{2}$

Hence, 4 Pens costs 50% of the money

Therefore 5 pens will cost 62.5% of the money

i.e. Rajesh spent 62.5%% of his money on pens